MMJ Connectors

A MMJ (Modified Modular Jack) connector is a mini serial port connector in which the hook of the connector is located on the inside of the plug.

MMJs are designed for mini-computers and to link printers, terminals and serial console servers. These connectors use crossover cables when linking up DTE (Data Terminal Equipment) devices like computers and printers.

What are MMJ connectors used for?

MMJ connectors are adaptable to increased information flow and bandwidth requirements.

Therefore, these connectors are mainly used as networking connectors and communication applications such as network interfaces, high speed LAN, and Ethernet connections.

In the gaming industry, MMJ connectors can be used to interconnect console applications like joystick, controls and racing wheels to mechanical pedals and rudders. MMJ connectors are typical in the telecommunications sector and are used in null modem communication systems that do not require internet connections.

Types of MMJ connectors

MMJ connectors are distinguished by connection type, for instance plug or jack, and by their mounting type, which could be surface or through-hole affixation. MMJ orientation can be straight or angled depending on the component they are attached to.

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Part Details Brand Gender Mounting Type Orientation Contact Material Contact Plating Length Width Depth Connector Type
RS PRO Cat4 MMJ Connector Modular Plug, UTP Shielding, Cable Mount RS Pro Male Cable Mount Straight Phosphor Bronze Gold - - 13.3mm Modular Plug
Bel-Stewart Cat4 MMJ Connector Modular Plug, UTP Shielding, Cable Mount Bel-Stewart Male Cable Mount Straight Phosphor Bronze Gold 9.65mm 8.4mm 13.3mm Modular Plug
Bel-Stewart Cat4 MMJ Connector Modular Socket, UTP Shielding, Right Angle, Through Hole Mount Bel-Stewart Female Through Hole Right Angle Copper Alloy Gold 13.46mm 12.83mm 20.71mm Modular Socket
JST Cat4 MMJ Connector Modular Socket, UTP Shielding, Cable Mount
  • RS Stock No. 749-5240
  • Brand JST
  • Mfr. Part No. MJ-66C-SD335
JST Female Cable Mount Straight Phosphor Bronze Gold over Nickel 18.3mm 14.9mm 15mm Modular Socket
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